defrostindoors

Some train-related ones:

http://wpthemes.info/posts/2005/03/21/fasttrack-the-most-wanted/
http://wpthemes.info/green-track/
http://tinyurl.com/estke

Sort of ‘beachy’:
http://www.templateshunt.com/template.php?id=11246

This one’s got a cute retro feel:
http://www.riotsqurrl.net/wp/?p=46

GINORMOUS list of themes here:
http://tinyurl.com/jpjw5

Hope you find what you’re looking for. 🙂